Push vs Pull
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Zabbix
has push and pull mode
lots of templates and powerfull agent
tcp communication
Database performance maybe the bottleneck
good for network devices and physical servers

Prometheus
pull mode
similar levedb engine
good for container and services
has collector and alert systems
http communication
no cluster right now

Influxdb
push mode
only time series database, need others to support
TSM engine

OpenTSDB
OpenTSDB’s storage is implemented on top of Hadoop and HBase
easy to scale OpenTSDB horizontally

Grafana
webui and use d3 so it’s very fast by running on gpu